Wheels II - The Sequel

I have added a set of wheel for the telescope pier abou 2 weeks back. Now I realised that they need to be secured to ensure that the polar alignment stays in place when I do the setup. So there has to be a locking mechanism. So I went online and looked for an M12 screw type castor and luckily I found them. 

This is the new set of wheels. The main difference is that it has a metallic flap that you can push down to lock the wheels and prevent it from moving.